[PATCH v15 04/11] arm64/ptrace: Expand secure_computing() in place

[Ada Couprie Diaz]

On 11/05/2026 10:20, Jinjie Ruan wrote:
> Refactor syscall_trace_enter() by open-coding the seccomp check
> to align with the generic entry framework.
>
> [Background]
> The generic entry implementation expands the seccomp check in-place
> instead of using the secure_computing() wrapper. It directly tests
> SYSCALL_WORK_SECCOMP and calls the underlying __secure_computing()
> function to handle syscall filtering.
>
> [Changes]
> 1. Open-code seccomp check:
>     - Instead of calling the secure_computing() wrapper, explicitly check
>       the 'flags' parameter for _TIF_SECCOMP.
>     - Call __secure_computing() directly if the flag is set.
>
> [Why this matters]
> - Aligns the arm64 syscall path with the generic entry implementation,
>    simplifying future migration to the generic entry framework.
> - No functional changes are intended; seccomp behavior remains identical.
>
> Cc: Mark Rutland <mark.rutland at arm.com>
> Cc: Will Deacon <will at kernel.org>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Reviewed-by: Linus Walleij <linusw at kernel.org>
> Reviewed-by: Yeoreum Yun <yeoreum.yun at arm.com>
> Reviewed-by: Kevin Brodsky <kevin.brodsky at arm.com>
> Signed-off-by: Jinjie Ruan <ruanjinjie at huawei.com>
> ---
Reviewed-by: Ada Couprie Diaz <ada.coupriediaz at arm.com>